Enable one flavor tests

Remove skip decorator for test_list_non_public_flavor in
api/compute/v3/admin/test_flavors.py as bug/1209101 was fixed.

Change-Id: I6f8ac575b0d9e512bbc57d8343e72fa4af0214a2
Closes-Bug: #1300606
diff --git a/tempest/api/compute/v3/admin/test_flavors.py b/tempest/api/compute/v3/admin/test_flavors.py
index 401eb85..2a4fc02 100644
--- a/tempest/api/compute/v3/admin/test_flavors.py
+++ b/tempest/api/compute/v3/admin/test_flavors.py
@@ -169,7 +169,6 @@
                 flag = True
         self.assertTrue(flag)
 
-    @test.skip_because(bug="1209101")
     @test.attr(type='gate')
     def test_list_non_public_flavor(self):
         # Create a flavor with os-flavor-access:is_public false should